Hydronium cation
- Formula: H3O+
- Molecular weight: 19.0227
- IUPAC Standard InChIKey: XLYOFNOQVPJJNP-UHFFFAOYSA-O
- CAS Registry Number: 13968-08-6
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Species with the same structure:
- Information on this page:
- Other data available:
- Reaction thermochemistry data: reactions 1 to 50, reactions 51 to 51
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Gas phase thermochemistry data
Go To: Top, Ion clustering data, Vibrational and/or electronic energy levels, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
S°gas,1 bar | 192.25 | J/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1966 |
Ion clustering data
Go To: Top, Gas phase thermochemistry data, Vibrational and/or electronic energy levels, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Michael M. Meot-Ner (Mautner) and Sharon G. Lias
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.
Clustering reactions
By formula: H3O+ + CH4 = (H3O+ • CH4)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 33. | kJ/mol | HPMS | Bennet and Field, 1972 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 85.4 | J/mol*K | HPMS | Bennet and Field, 1972 | gas phase |
By formula: (H3O+ • CH4) + CH4 = (H3O+ • 2CH4)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 14. | kJ/mol | HPMS | Bennet and Field, 1972 | gas phase; Entropy change is questionable |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 34. | J/mol*K | HPMS | Bennet and Field, 1972 | gas phase; Entropy change is questionable |
By formula: H3O+ + CO2 = (H3O+ • CO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 59.8 | kJ/mol | PHPMS | Szulejko and McMahon, 1992 | gas phase |
ΔrH° | 64.0 | kJ/mol | PHPMS | Hiraoka, Shoda, et al., 1986 | gas phase |
ΔrH° | 60.2 | kJ/mol | PHPMS | Meot-Ner (Mautner) and Field, 1977 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 88.7 | J/mol*K | PHPMS | Szulejko and McMahon, 1992 | gas phase |
ΔrS° | 103. | J/mol*K | PHPMS | Hiraoka, Shoda, et al., 1986 | gas phase |
ΔrS° | 86.6 | J/mol*K | PHPMS | Meot-Ner (Mautner) and Field, 1977 | gas phase |
By formula: (H3O+ • CO2) + CO2 = (H3O+ • 2CO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 51.9 | kJ/mol | PHPMS | Hiraoka, Shoda, et al., 1986 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 111. | J/mol*K | PHPMS | Hiraoka, Shoda, et al., 1986 | gas phase |
By formula: (H3O+ • 2CO2) + CO2 = (H3O+ • 3CO2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 43.9 | kJ/mol | PHPMS | Hiraoka, Shoda, et al., 1986 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 113. | J/mol*K | PHPMS | Hiraoka, Shoda, et al., 1986 | gas phase |
By formula: H3O+ + H2O = (H3O+ • H2O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 136. ± 9. | kJ/mol | AVG | N/A | Average of 7 out of 14 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 120. ± 30. | J/mol*K | AVG | N/A | Average of 5 out of 7 values; Individual data points |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
34. | 300. | HPMS | Arifov, Pozharov, et al., 1971 | gas phase |
By formula: (H3O+ • 2H2O) + CHN = (H3O+ • CHN • 2H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 82.8 | kJ/mol | PHPMS | Meot-Ner (Mautner) and Speller, 1989 | gas phase; n |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 123. | J/mol*K | PHPMS | Meot-Ner (Mautner) and Speller, 1989 | gas phase; n |
By formula: (H3O+ • H2O) + H2O = (H3O+ • 2H2O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 84. ± 5. | kJ/mol | AVG | N/A | Average of 7 out of 14 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 94. ± 20. | J/mol*K | AVG | N/A | Average of 5 out of 7 values; Individual data points |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
36. | 300. | HPMS | Arifov, Pozharov, et al., 1971 | gas phase |
By formula: (H3O+ • 2H2O) + H2O = (H3O+ • 3H2O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 73. ± 4. | kJ/mol | AVG | N/A | Average of 9 out of 16 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 118. ± 8. | J/mol*K | AVG | N/A | Average of 6 out of 9 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 39. | kJ/mol | FA | Bierbaum, Golde, et al., 1976 | gas phase |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
38. | 300. | HPMS | Arifov, Pozharov, et al., 1971 | gas phase |
38. | 296. | SAMS | Puckett and Teague, 1971 | gas phase |
35. | 300. | PHPMS | Good, Durden, et al., 1970 | gas phase |
35. | 307. | PHPMS | Good, Durden, et al., 1970, 2 | gas phase |
By formula: (H3O+ • 3H2O) + H2O = (H3O+ • 4H2O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 56. ± 20. | kJ/mol | AVG | N/A | Average of 6 out of 9 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 100. ± 20. | J/mol*K | AVG | N/A | Average of 5 out of 7 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 23. | kJ/mol | FA | Bierbaum, Golde, et al., 1976 | gas phase |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
24. | 293. | ES/HPMS | Klassen, Blades, et al., 1995 | gas phase |
23. | 296. | SAMS | Puckett and Teague, 1971 | gas phase |
21. | 300. | PHPMS | Good, Durden, et al., 1970 | gas phase |
21. | 307. | PHPMS | Good, Durden, et al., 1970, 2 | gas phase |
29. | 300. | HPMS | Arifov, Pozharov, et al., 1971 | gas phase |
By formula: (H3O+ • 4H2O) + H2O = (H3O+ • 5H2O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 50. ± 8. | kJ/mol | AVG | N/A | Average of 5 out of 8 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 102. ± 20. | J/mol*K | AVG | N/A | Average of 4 out of 6 values; Individual data points |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
19. | 293. | ES/HPMS | Klassen, Blades, et al., 1995 | gas phase |
By formula: (H3O+ • 5H2O) + H2O = (H3O+ • 6H2O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 44.8 | kJ/mol | PHPMS | Lau, Ikuta, et al., 1982 | gas phase |
ΔrH° | 49.0 | kJ/mol | HPMS | Kebarle, Searles, et al., 1967 | gas phase |
ΔrH° | 67.32 | kJ/mol | MKER | Shi, Ford, et al., 1993 | gas phase; Entropy change is questionable |
ΔrH° | 28. | kJ/mol | CID | Magnera, David, et al., 1991 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 109. | J/mol*K | PHPMS | Lau, Ikuta, et al., 1982 | gas phase |
ΔrS° | 124. | J/mol*K | HPMS | Kebarle, Searles, et al., 1967 | gas phase |
ΔrS° | 346.0 | J/mol*K | MKER | Shi, Ford, et al., 1993 | gas phase; Entropy change is questionable |
By formula: (H3O+ • 6H2O) + H2O = (H3O+ • 7H2O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 28. | kJ/mol | CID | Magnera, David, et al., 1991 | gas phase |
ΔrH° | 43.1 | kJ/mol | HPMS | Kebarle, Searles, et al., 1967 | gas phase |
ΔrH° | 50.33 | kJ/mol | MKER | Shi, Ford, et al., 1993 | gas phase; Entropy change is questionable |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 110. | J/mol*K | HPMS | Kebarle, Searles, et al., 1967 | gas phase |
ΔrS° | 218.9 | J/mol*K | MKER | Shi, Ford, et al., 1993 | gas phase; Entropy change is questionable |
By formula: (H3O+ • 7H2O) + H2O = (H3O+ • 8H2O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 40.9 | kJ/mol | MKER | Shi, Ford, et al., 1993 | gas phase |
ΔrH° | 21. | kJ/mol | CID | Magnera, David, et al., 1991 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 140.0 | J/mol*K | MKER | Shi, Ford, et al., 1993 | gas phase |
By formula: (H3O+ • 8H2O) + H2O = (H3O+ • 9H2O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 36.7 | kJ/mol | MKER | Shi, Ford, et al., 1993 | gas phase |
ΔrH° | 24. | kJ/mol | CID | Magnera, David, et al., 1991 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 112.6 | J/mol*K | MKER | Shi, Ford, et al., 1993 | gas phase |
By formula: (H3O+ • 9H2O) + H2O = (H3O+ • 10H2O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 37.2 | kJ/mol | MKER | Shi, Ford, et al., 1993 | gas phase |
ΔrH° | 28. | kJ/mol | CID | Magnera, David, et al., 1991 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 107.8 | J/mol*K | MKER | Shi, Ford, et al., 1993 | gas phase |
By formula: (H3O+ • 10H2O) + H2O = (H3O+ • 11H2O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 38.9 | kJ/mol | MKER | Shi, Ford, et al., 1993 | gas phase |
ΔrH° | 28. | kJ/mol | CID | Magnera, David, et al., 1991 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 112.6 | J/mol*K | MKER | Shi, Ford, et al., 1993 | gas phase |
By formula: (H3O+ • 11H2O) + H2O = (H3O+ • 12H2O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 41.1 | kJ/mol | MKER | Shi, Ford, et al., 1993 | gas phase |
ΔrH° | 29. | kJ/mol | CID | Magnera, David, et al., 1991 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 140.7 | J/mol*K | MKER | Shi, Ford, et al., 1993 | gas phase |
By formula: (H3O+ • 12H2O) + H2O = (H3O+ • 13H2O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 43.10 | kJ/mol | MKER | Shi, Ford, et al., 1993 | gas phase |
ΔrH° | 28. | kJ/mol | CID | Magnera, David, et al., 1991 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 158.7 | J/mol*K | MKER | Shi, Ford, et al., 1993 | gas phase |
By formula: (H3O+ • 13H2O) + H2O = (H3O+ • 14H2O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 44.35 | kJ/mol | MKER | Shi, Ford, et al., 1993 | gas phase |
ΔrH° | 28. | kJ/mol | CID | Magnera, David, et al., 1991 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 166.7 | J/mol*K | MKER | Shi, Ford, et al., 1993 | gas phase |
By formula: (H3O+ • 14H2O) + H2O = (H3O+ • 15H2O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 44.85 | kJ/mol | MKER | Shi, Ford, et al., 1993 | gas phase |
ΔrH° | 28. | kJ/mol | CID | Magnera, David, et al., 1991 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 168.9 | J/mol*K | MKER | Shi, Ford, et al., 1993 | gas phase |
By formula: (H3O+ • 15H2O) + H2O = (H3O+ • 16H2O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 45.27 | kJ/mol | MKER | Shi, Ford, et al., 1993 | gas phase |
ΔrH° | 25. | kJ/mol | CID | Magnera, David, et al., 1991 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 176.4 | J/mol*K | MKER | Shi, Ford, et al., 1993 | gas phase |
By formula: (H3O+ • 16H2O) + H2O = (H3O+ • 17H2O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 45.02 | kJ/mol | MKER | Shi, Ford, et al., 1993 | gas phase |
ΔrH° | 28. | kJ/mol | CID | Magnera, David, et al., 1991 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 173.1 | J/mol*K | MKER | Shi, Ford, et al., 1993 | gas phase |
By formula: (H3O+ • 17H2O) + H2O = (H3O+ • 18H2O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 44.98 | kJ/mol | MKER | Shi, Ford, et al., 1993 | gas phase |
ΔrH° | 26. | kJ/mol | CID | Magnera, David, et al., 1991 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 170.0 | J/mol*K | MKER | Shi, Ford, et al., 1993 | gas phase |
By formula: (H3O+ • 18H2O) + H2O = (H3O+ • 19H2O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 44.60 | kJ/mol | MKER | Shi, Ford, et al., 1993 | gas phase |
ΔrH° | 29. | kJ/mol | CID | Magnera, David, et al., 1991 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 171.5 | J/mol*K | MKER | Shi, Ford, et al., 1993 | gas phase |
By formula: (H3O+ • 19H2O) + H2O = (H3O+ • 20H2O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 44.10 | kJ/mol | MKER | Shi, Ford, et al., 1993 | gas phase |
ΔrH° | 38. | kJ/mol | CID | Magnera, David, et al., 1991 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 165.8 | J/mol*K | MKER | Shi, Ford, et al., 1993 | gas phase |
By formula: (H3O+ • 20H2O) + H2O = (H3O+ • 21H2O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 43.64 | kJ/mol | MKER | Shi, Ford, et al., 1993 | gas phase |
ΔrH° | 31. | kJ/mol | CID | Magnera, David, et al., 1991 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 156.7 | J/mol*K | MKER | Shi, Ford, et al., 1993 | gas phase |
By formula: (H3O+ • 21H2O) + H2O = (H3O+ • 22H2O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 43.18 | kJ/mol | MKER | Shi, Ford, et al., 1993 | gas phase |
ΔrH° | 25. | kJ/mol | CID | Magnera, David, et al., 1991 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 165.1 | J/mol*K | MKER | Shi, Ford, et al., 1993 | gas phase |
By formula: (H3O+ • 22H2O) + H2O = (H3O+ • 23H2O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 43.72 | kJ/mol | MKER | Shi, Ford, et al., 1993 | gas phase |
ΔrH° | 27. | kJ/mol | CID | Magnera, David, et al., 1991 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 162.8 | J/mol*K | MKER | Shi, Ford, et al., 1993 | gas phase |
By formula: (H3O+ • 23H2O) + H2O = (H3O+ • 24H2O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 43.01 | kJ/mol | MKER | Shi, Ford, et al., 1993 | gas phase |
ΔrH° | 28. | kJ/mol | CID | Magnera, David, et al., 1991 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 156.7 | J/mol*K | MKER | Shi, Ford, et al., 1993 | gas phase |
By formula: (H3O+ • 24H2O) + H2O = (H3O+ • 25H2O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 42.09 | kJ/mol | MKER | Shi, Ford, et al., 1993 | gas phase |
ΔrH° | 30. | kJ/mol | CID | Magnera, David, et al., 1991 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 151.3 | J/mol*K | MKER | Shi, Ford, et al., 1993 | gas phase |
By formula: (H3O+ • 25H2O) + H2O = (H3O+ • 26H2O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 40.7 | kJ/mol | MKER | Shi, Ford, et al., 1993 | gas phase |
ΔrH° | 26. | kJ/mol | CID | Magnera, David, et al., 1991 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 137.4 | J/mol*K | MKER | Shi, Ford, et al., 1993 | gas phase |
By formula: (H3O+ • 26H2O) + H2O = (H3O+ • 27H2O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 39.4 | kJ/mol | MKER | Shi, Ford, et al., 1993 | gas phase |
ΔrH° | 34. | kJ/mol | CID | Magnera, David, et al., 1991 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 129.4 | J/mol*K | MKER | Shi, Ford, et al., 1993 | gas phase |
By formula: (H3O+ • 27H2O) + H2O = (H3O+ • 28H2O)
Bond type: Hydrogen bond (positive ion to hydride)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 37.9 | kJ/mol | MKER | Shi, Ford, et al., 1993 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 116.2 | J/mol*K | MKER | Shi, Ford, et al., 1993 | gas phase |
By formula: (H3O+ • H2O) + N2 = (H3O+ • N2 • H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 22. | kJ/mol | DT | Gheno and Fitaire, 1987 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 58.2 | J/mol*K | DT | Gheno and Fitaire, 1987 | gas phase |
By formula: (H3O+ • 2H2O) + N2 = (H3O+ • N2 • 2H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 21. | kJ/mol | DT | Gheno and Fitaire, 1987 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 59.8 | J/mol*K | DT | Gheno and Fitaire, 1987 | gas phase |
By formula: (H3O+ • 3H2O) + O2S = (H3O+ • O2S • 3H2O)
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
18. | 300. | HPMS | Banic and Iribarne, 1985 | gas phase; electric fields |
By formula: (H3O+ • 4H2O) + O2S = (H3O+ • O2S • 4H2O)
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
11. | 300. | HPMS | Banic and Iribarne, 1985 | gas phase; electric fields |
11. | 300. | HPMS | Banic and Iribarne, 1985 | gas phase; electric fields |
By formula: H3O+ + H2 = (H3O+ • H2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 15. ± 2. | kJ/mol | SCATTERING | Okumura, Yeh, et al., 1990 | gas phase |
By formula: H3O+ + N2O = (H3O+ • N2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 70.7 | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 110. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
By formula: (H3O+ • N2O) + N2O = (H3O+ • 2N2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 50.6 | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 96. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
By formula: (H3O+ • 2N2O) + N2O = (H3O+ • 3N2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 42.7 | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 110. | J/mol*K | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase |
By formula: (H3O+ • 3N2O) + N2O = (H3O+ • 4N2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 22. | kJ/mol | PHPMS | Hiraoka, Fujimaki, et al., 1994 | gas phase; Entropy change calculated or estimated |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 88. | J/mol*K | N/A | Hiraoka, Fujimaki, et al., 1994 | gas phase; Entropy change calculated or estimated |
By formula: (H3O+ • N2 • H2O) + N2 = (H3O+ • 2N2 • H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 21. | kJ/mol | DT | Gheno and Fitaire, 1987 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 54.8 | J/mol*K | DT | Gheno and Fitaire, 1987 | gas phase |
By formula: (H3O+ • N2 • 2H2O) + N2 = (H3O+ • 2N2 • 2H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 22. | kJ/mol | DT | Gheno and Fitaire, 1987 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 69.5 | J/mol*K | DT | Gheno and Fitaire, 1987 | gas phase |
By formula: (H3O+ • N2 • 3H2O) + N2 = (H3O+ • 2N2 • 3H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 18. | kJ/mol | DT | Gheno and Fitaire, 1987 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 65.7 | J/mol*K | DT | Gheno and Fitaire, 1987 | gas phase |
By formula: (H3O+ • 2N2 • H2O) + N2 = (H3O+ • 3N2 • H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 33. ± 8. | kJ/mol | DT | Gheno and Fitaire, 1987 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 92. | J/mol*K | DT | Gheno and Fitaire, 1987 | gas phase |
By formula: (H3O+ • 2N2 • 2H2O) + N2 = (H3O+ • 3N2 • 2H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 38. ± 11. | kJ/mol | DT | Gheno and Fitaire, 1987 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 119. | J/mol*K | DT | Gheno and Fitaire, 1987 | gas phase |
By formula: (H3O+ • 2N2 • 3H2O) + N2 = (H3O+ • 3N2 • 3H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 5.0 | kJ/mol | DT | Gheno and Fitaire, 1987 | gas phase; ΔrH, ΔrS approximate |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 27. | J/mol*K | DT | Gheno and Fitaire, 1987 | gas phase; ΔrH, ΔrS approximate |
By formula: (H3O+ • 3N2 • 2H2O) + N2 = (H3O+ • 4N2 • 2H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 10. | kJ/mol | DT | Gheno and Fitaire, 1987 | gas phase; ΔrH, ΔrS approximate |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 50. | J/mol*K | DT | Gheno and Fitaire, 1987 | gas phase; ΔrH, ΔrS approximate |
By formula: H3O+ + O2S = (H3O+ • O2S)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 92.0 | kJ/mol | PHPMS | Szulejko and McMahon, 1992 | gas phase |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 95.0 | J/mol*K | PHPMS | Szulejko and McMahon, 1992 | gas phase |
Vibrational and/or electronic energy levels
Go To: Top, Gas phase thermochemistry data, Ion clustering data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Marilyn E. Jacox
State: X
Additional references: Jacox, 1994, page 129; Jacox, 2003, page 160; Sears, Bunker, et al., 1985; Liu, Oka, et al., 1986; Verhoeve, Versluis, et al., 1989; Petek, Nesbitt, et al., 1990; Uy, White, et al., 1997; Araki, Ozeki, et al., 1998; Araki, Ozeki, et al., 1999; Dong, Uy, et al., 2005; Dong and Nesbitt, 2006; Furuya, Saito, et al., 2007; Furuya and Saito, 2008
Notes
H | (1/2)(2ν) |
I | Component of an inversion doublet |
T | Tentative assignment or approximate value |
References
Go To: Top, Gas phase thermochemistry data, Ion clustering data, Vibrational and/or electronic energy levels, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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Notes
Go To: Top, Gas phase thermochemistry data, Ion clustering data, Vibrational and/or electronic energy levels, References
- Symbols used in this document:
S°gas,1 bar Entropy of gas at standard conditions (1 bar) T Temperature ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔrS° Entropy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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